F - Mech Eng,Light,Heat,Weapons – 16 – D
Patent
F - Mech Eng,Light,Heat,Weapons
16
D
F16D 43/284 (2006.01) F16D 25/0638 (2006.01)
Patent
CA 2448054
A speed-difference-dependent hydraulic clutch comprises a drive housing (11), which rotates in a housing (20), a first shaft (21) which can be connected in a rotationally fixed manner to the drive housing, a second shaft (22) which is connected in a rotationally fixed manner to the drive housing, and furthermore a hydrostatic displacement machine (1), a friction clutch (12) for connecting the first shaft (21) to the drive housing (11), and a piston (10) for acting on the friction clutch (12), the drive housing (11) having a pressure space (9) and where a pressure is produced in the pressure space (9) when a difference in speed occurs in the pressure space (9), this pressure giving rise to action upon the friction clutch (12), and a passage (13) leading from the pressure space to a control valve which opens up the route to a space of lower pressure in a controlled manner. In order to make possible a sensitive, precise and rapid control and adaptation of the characteristic with as little outlay as possible, the control valve (14) is arranged in the drive housing (11) and/or, in the second shaft (22), which is connected in a rotationally fixed manner to the drive housing (11), is arranged coaxially with said shaft, and has a control element (52) which can be displaced in the direction of the axis and is actuated by an actuator (59, 61, 62) which is fixed on the housing.
L'invention concerne un embrayage hydraulique dépendant du régime, qui comprend un carter de commande (11) tournant dans un carter (20), un premier arbre (21) pouvant être solidarisé avec le carter de commande, un second arbre (22) solidarisé au carter de commande, ainsi qu'une machine de déplacement (1) hydrostatique, un accouplement à friction (12) pour relier le premier arbre (21) au carter de commande (11) et un piston (10) pour solliciter l'accouplement à friction (12). Le carter de commande (11) comporte une chambre de pression (9) et produit de la pression en cas d'apparition d'un régime différentiel dans la chambre de pression (9). Ladite pression induit une sollicitation de l'accouplement à friction (12) et un canal (13) mène de la chambre de pression à une soupape de commande (14) qui libère de manière commandée le passage menant à une chambre de pression plus basse. Afin de permettre avec la complexité technique la plus réduite de parvenir à une régulation sensible, précise et rapide et à un ajustement de la caractéristique, la soupape de commande (14) est montée dans le carter de commande (11) et/ou dans le second arbre (22) solidarisé au carter de commande (11), de manière coaxiale audit arbre (22). Ladite régulation comporte un élément de commande (52) coulissant dans le sens de l'axe, qui est actionné par un actionneur (59, 61, 62) solidaire du carter.
Gratzer Franz
Schaffernak Robert
Magna Steyr Powertrain Ag & Co Kg
Porat Alex
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